Step 4：Remove the original key and put TPX4 into the testing hole and then Press "OK" button.

Step 5:After you see following information then go to the car. Put the TPX4 near to ignition and insert the original key return the key to the original position and remove it from the ignition . Repeat this operation 4 Times.

Step 6:After use TPX4 got the information from the ignition then take back and put into the CN900 testing hole and then press "OK" button.

Step 7:After press "OK" as above step then you will see following information from the screen. Then you remove TPX4 and put the original key into the testing hole and press "OK" button and then CN900 start to decoding.After few seconds then will see "decoded successfully".

Step 8:After "decoded successfully" then will see following information.Step 9:Remove the original key from CN900 and put CN3 into the testing hole and press "copy" button. Waiting for few seconds then will see "copy success".So the original key be copied by CN3 chip successfully